diff --git a/dockers/ubuntu-cuda/Dockerfile b/dockers/ubuntu-cuda/Dockerfile
index 0e73c60c6f7..f7f391e5927 100644
--- a/dockers/ubuntu-cuda/Dockerfile
+++ b/dockers/ubuntu-cuda/Dockerfile
@@ -85,7 +85,7 @@ RUN \
     # needed for the gpu multiprocessing
     pip install "mkl-service==2.4.0" && \
     CUDA_VERSION_MM=${CUDA_VERSION%.*} && \
-    CU_VERSION_MM=${CUDA_VERSION_MM//'.'/''}/ && \
+    CU_VERSION_MM=${CUDA_VERSION_MM//'.'/''} && \
     pip install --no-cache-dir -r requirements/_devel.txt \
       --find-links "https://download.pytorch.org/whl/cu${CU_VERSION_MM}/torch_stable.html" && \
     rm -rf requirements/